Synthetic



UNITED STATES PATENT OFFICE.

FREDERICK IB. POWER, OF WASHINGTON, DISTRICT OF COLUMBIA, AND VICTOR K- V CHESNUT, OF HYATTSVTILLE, MARYLAND.

SYNTHETIC APPLE-OIL.

No Drawing.

Specification of Letters Patent.

Patented Jan. 25, 1921.

(FILED UNDER THE ACT OF MARCH 3, 1883, 22 STAT. In; 625.)

To all whom it may concern:

Be it known that we, FREDERICK B. POWER and VICTOR K. CHEsNUr, citizens of the United States of America, and employees of the Department of Agriculture, residing in Washington, District of Columbia, and Hyattsvillo, Maryland, respectively, (whose post-office address is Department of Agriculture, Washington, D. C.,) have invented a new and useful Synthetic Apple-Oil.

This application is made under the act of March 1883, chapter 148 (22 Stat, 625), and the invention herein described and claimed may be used by the Government of the United States or any of its oflicers or em- 1 loyees in the prosecution of work for the overnment, and by any person in the United States, either in public or private work, without payment to us of any royalty thereon.

Our invention relates to a synthetic apple oil and any combinations or mixtures that may be prepared therefrom. The production of our synthetic apple oil is based upon the results of extensive chemical investlgations of the odorous constituents of fresh ripe apples, the nature of which has not heretofore been known.

Our synthetic apple oil is composed of the amyl esters of formic, acetic, caproic, and caprylic acids, together with acetaldehyde, and these substances when mixed in suitable proportions, represent in a highly concentrated form the fragrant odor of fresh appies. This preparation may be used to impart the true odor of apples to various articles of food and beverages, or as a general flavoring agent. The proportions by volume of the various constituents of the oil which have been found most suitable for the purpose intended, and which should be employed in the purest possible state, are as follows:

Iso-amyl ester of formic acid 10 parts Iso-amyl ester of acetic acid 10 parts Iso-amyl ester of normal caproic It has been found that a satisfactory synthetic apple oil may be obtained by omitting from the above combination of ingredients the iso-amyl ester of normal caprylic acid.

The above mentioned combinations which are not restricted to the exact proportions indicated may be employed for flavoring purposes either in its concentrated state or in the form of a solution in pure ethyl alcohol, in a mixture of alcohol and glycerin, and with alcoholic solutions of certain organic acids, such as citric and tartaric acids, or it may be brought into the form of an emulsion with certain fatty oils, especially such as have the least tendency to become rancid on keeping.

We claim:

1. A synthetic apple oil consisting of the amyl esters of formic, acetic, caproic, and caprylic acids, together with acetaldehyde.

2. A synthetic apple oil consisting of a mixture of the amyl esters of formic, acetic,

caporic acids, together with acetaldehyde.

In testimony whereof, we afiix our signatures in the presence of twosubscrlbingwit- O. O. Corr. 

